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southern parts of the Himausak complex. The following types 
are here represented: — 
arfvedsonite-granite 
augite-syenite 
nordmarkite 
essexite. 
The third division comprises the volcanic rocks of llimausak. 
During the field work these were classified as diabases, por- 
phyrites, porphyries, and quartz-porphyries. For convenience 
the same headings will be used here; it should, however, be 
borne in mind that these rocks in reality belong to the alkali- 
group. 
In the following description the rocks will be mentioned 
in the order given above with the exception that the description 
of the arfvedsonite-granite of the second division is given in con- 
nection with that of the corresponding rock of the first division. 
GRANITES. 
The granites of the Ilimausak complex are alkali-granites 
and as a rule they are arfvedsonite-bearing. The principal 
granite-body belongs to the ‘stratified’ batholite and will be de- 
scribed as the ‘arfvedsonite-granite of [limausak’. In the western 
unstratified part of the abyssal complex a closely related rock 
occurs which will be described under the head of ‘arfvedsonite- 
granite of Narsak’. A third variety of granite which will also 
be mentioned in this place is the ‘soda-granite of Iviangusat’. 
This, however, is no independent abyssal rock but occurs under 
peculiar conditions as subordinate masses in the augite-syenite 
and is intimately connected with the presence of sandstone- 
fragments. 
